Fourier series of Jacobi-Sobolev polynomial

Óscar Ciaurri, Judit Mínguez

Let $\{q_n^{(\alpha ,\beta ,m)}(x){\}}_{n\ge 0}$ be the orthonormal polynomials respect to the Sobolev-type inner product \begin{equation*} \langle f,g\rangle_{α,β,m}=\sum_{k=0}^m \int_{-1}^{1}…